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2 years ago

10

Sometimes the object does not burn up completely and a part of it survives the fall to the planet’s surface. These rocky bodies,

are called (blank)

2 answers:

jok3333 [9.3K]2 years ago

7 0

Answer: They Are Called Meteor

alexira [117]2 years ago

7 0

They are called meteors

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in baseball, a pitcher can accelerate 0.15kg ball from rest to 98 mi/hr in a distance of 1.7m. (a) What is the average force exe

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Answer:

F=84.68 N

Required force increases

Explanation:

By the equation

$v^{2}=u^{2} +2as\\ 98^{2}*1609.344^{2}/(60*60)^{2}=0+2*a*1.7\\a = 98^{2}*1609.344^{2}/((60*60)^{2}*2*1.7)\\a = 564.50m/s^{2} \\$

By newton's second law :

$F=ma\\F=0.15*564.50 \\F=84.68 N$

When the mass increased the force increases as the equation.

F=ma

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